Entanglement measure and dynamics of multiqubit systems: non-Markovian versus Markovian and generalized monogamy relations

Entanglement measure and dynamics of multiqubit systems: non-Markovian versus Markovian and generalized monogamy relations
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多量子位系统的纠缠测量和动力学:非马尔可夫与马尔可夫以及广义一夫一妻制关系

DOI:
10.1088/1367-2630/12/3/033020
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发表时间:
2010-03
影响因子:
3.3
通讯作者:
Xia, Yun-Jie
Xia, Yun-Jie
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Nguyen Ba An;Man, Zhong-Xiao;Xia, Yun-Jie

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在本文中,我们首先提出了一个简单的度量多量子比特纠缠的基础上的二分切割策略和负性的措施。然后,我们建立了多量子比特系统中任意分割的广义一夫一妻不等式和相应的分割依赖剩余纠缠。借助于所定义的量子量,我们研究了N个量子比特系统的纠缠动力学,无论是在Greenberger-Horne-Zeilinger(GHZ)型态还是在W态,与N个独立的库在马尔可夫和非马尔可夫机制下相互作用.我们观察到量子位纠缠在瞬间消失点或在有限的时间间隔后突然消失,由于非马尔可夫水库的记忆效应的复苏。我们还跟踪了整个纠缠演化的PRE,演示了所有可能的二体纠缠到多体纠缠的过渡过程。特别是,我们表明,纠缠格式的时间变化定性不同的GHZ型和W状态。
In this paper, we first present a simple measure for multiqubit entanglement based on the strategy of bipartite cuts and the measure of negativity. Then, we establish generalized monogamy inequalities and associated partition-dependent residual entanglement (PRE) accounting for arbitrary partitions of a multiqubit system. By virtue of the defined quantities, we investigate the entanglement dynamics of a system of N qubits, either in the Greenberger–Horne–Zeilinger (GHZ)-type state or in the W state, interacting with N independent reservoirs in both Markovian and non-Markovian regimes. We observe entanglement revivals of qubits at instantaneous points of disappearance or after a finite interval of abrupt vanishing due to the memory effect of non-Markovian reservoirs. We also follow the whole entanglement evolution in terms of the PRE to demonstrate the process of transition between the bipartite entanglement of all possible bipartitions and the multipartite entanglement. In particular, we show that the change in time of entanglement formats differs qualitatively for the GHZ-type and W states.
腔 QED 中六量子位模型的纠缠动力学
DOI: 10.1088/0953-4075/41/15/155501
发表时间: 2008-08
影响因子: 1.6
作者:
Nguyen Ba An;Xia, Yun-Jie;Man, Zhong-Xiao
通讯作者: Man, Zhong-Xiao
三量子位状态下的纠缠一夫一妻制
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期刊: Physical Review A
影响因子: 2.9
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影响因子: 1.6
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影响因子: --
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DOI: 10.1103/physreva.77.032342
发表时间: 2008-03-01
期刊: PHYSICAL REVIEW A
影响因子: 2.9
作者:
Bellomo, B.;Lo Franco, R.;Compagno, G.
通讯作者: Compagno, G.